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21. 发明申请

US20210135783A1 MUTUAL INFORMATION BASED POLAR CODE CONSTRUCTION 有权
公开(公告)号：US20210135783A1
公开(公告)日：2021-05-06
申请号：US16487050
申请日：2017-12-14
申请人： Yang YANG , Jing JIANG , Gabi SARKIS , Chao WEI , Jian LI , Changlong XU , Hari SANKAR , Joseph Binamira SORIAGA , QUALCOMM Incorporated
发明人： Yang Yang , Jing Jiang , Gabi Sarkis , Chao Wei , Jian Li , Changlong Xu , Hari Sankar , Joseph Binamira Soriaga
IPC分类号： H04L1/00 , H03M13/13 , H03M13/01 , G06N7/00
摘要： Methods, systems, and devices for wireless communication are described for mutual information based polar code construction. A wireless device may receive a codeword over a wireless channel, the codeword encoded using a polar code. The wireless device may identify a set of bit locations of the polar code corresponding to information bits of an encoded information bit vector. The set of bit locations may be determined based at least in part on a reliability order of the bit locations of the polar code, and the reliability order may be determined based at least in part on a recursive model that includes at least one mutual information transfer function that is applied at each polarization stage of multiple polarization stages of the polar code. The wireless device may decode the received codeword to obtain the information bit vector at the set of bit locations.

22. 发明授权

US08693590B2 Joint special burst and transport format combination index (TFCI) detection 失效
标题翻译：联合特殊突发和传输格式组合指标（TFCI）检测
公开(公告)号：US08693590B2
公开(公告)日：2014-04-08
申请号：US13477957
申请日：2012-05-22
申请人： Insung Kang , Hari Sankar
发明人： Insung Kang , Hari Sankar
IPC分类号： H03D1/00
CPC分类号： H04L1/0025
摘要： To detect a special burst sequence, a cross correlation (C) is compared to a square root of an estimated noise variance (σ) in conjunction with a threshold value (Th). In one aspect of the disclosure, the threshold value may include multiple threshold values. The multiple threshold values may be compared to an intensity or level of a special burst metric (C/σ) to facilitate determination of the special burst sequence. For example, when a special burst metric C/σ is greater than a second threshold value (Th2) it may be determined that a special burst sequence exists. However, when the special burst metric C/σ is greater than a first threshold value (Th1), but less than the second threshold metric (Th2), it may be determined that detection of a special burst is unclear. In this case, a TFCI value may be used to confirm whether a special burst is detected.
摘要翻译：为了检测特殊的突发序列，将互相关（C）与估计噪声方差（＆sgr）的平方根结合阈值（Th）进行比较。在本公开的一个方面，阈值可以包括多个阈值。可以将多个阈值与特殊突发度量（C / s）的强度或电平进行比较，以便于确定特殊突发序列。例如，当一个特殊的突发度量C / 大于第二阈值（Th2）时，可以确定存在特殊突发序列。然而，当特殊突发量度标准C / 大于第一阈值（Th1）但小于第二阈值度量（Th2）时，可以确定特殊突发的检测不清楚。在这种情况下，可以使用TFCI值来确认是否检测到特殊突发。

23. 发明授权

US08204442B2 Intercell interference mitigation 有权
标题翻译：小区干扰减轻
公开(公告)号：US08204442B2
公开(公告)日：2012-06-19
申请号：US12327732
申请日：2008-12-03
申请人： Hari Sankar , Ron Porat , Danjie Pan , Wee Peng Goh , Srikanth Gummadi , Lei Wang
发明人： Hari Sankar , Ron Porat , Danjie Pan , Wee Peng Goh , Srikanth Gummadi , Lei Wang
IPC分类号： H04B1/00
CPC分类号： H04L5/0032 , H04L1/0026 , H04L5/0007 , H04L5/0037 , H04L5/0057 , H04L5/0062 , H04L5/0066 , H04L25/0204 , H04W72/0406 , H04W72/0453 , H04W72/048 , H04W72/082
摘要： Methods and apparatus are described for mitigating intercell interference in wireless communication systems utilizing substantially the same operating frequency band across multiple neighboring coverage areas. The operating frequency band may be shared across multiple neighboring or otherwise adjacent cells, such as in a frequency reuse one configuration. The wireless communication system can synchronize one or more resource allocation regions or zones across the multiple base stations, and can coordinate a permutation type within each resource allocation zone. The base stations can coordinate a pilot configuration in each of a plurality of coordinated resource allocation regions. Subscriber stations can be assigned resources in a coordinated resource allocation region based on interference levels. A subscriber station can determine a channel estimate for each of multiple base stations in the coordinated resource allocation region to mitigate interference.
摘要翻译：描述了用于减轻跨越多个相邻覆盖区域的基本上相同的工作频带的无线通信系统中的小区间干扰的方法和装置。操作频带可以在多个相邻或相邻的小区之间共享，例如在频率重用一个配置中。无线通信系统可以跨多个基站同步一个或多个资源分配区域或区域，并且可以协调每个资源分配区域内的置换类型。基站可以协调多个协调资源分配区域中的每一个中的导频配置。可以基于干扰级别在协调的资源分配区域中为用户站分配资源。订户站可以确定协调资源分配区域中的多个基站中的每个基站的信道估计以减轻干扰。

24. 发明申请

US20120069753A1 CHANNEL ESTIMATION BASED ON MIDAMBLE 审中-公开
标题翻译：基于MIDAMBLE的信道估计
公开(公告)号：US20120069753A1
公开(公告)日：2012-03-22
申请号：US13175279
申请日：2011-07-01
申请人： Hari Sankar , Wenjun Li , Farrokh Abrishamkar , Srikanth Gummadi
发明人： Hari Sankar , Wenjun Li , Farrokh Abrishamkar , Srikanth Gummadi
IPC分类号： H04W24/00
CPC分类号： H04L25/0218 , H04L25/0228 , H04L25/024
摘要： Channel estimation at a user equipment includes estimating channel quality of at least one channel. A first algorithm or a second algorithm is selected based on the estimated channel quality. Channel estimation is performed based on the selected algorithm. The first algorithm may be a midamble multiplication-based algorithm. The second algorithm may be a midamble division algorithm. Channel estimation may also include estimating noise of a channel and adaptively setting a threshold based on the estimated noise to refine the channel estimation. The estimating channel quality, selecting of a first or second algorithm and channel estimation may be performed iteratively for contributing signals on a channel. An adaptive threshold may be modified across iterations. The channel estimation may also include determining a delay profile of a channel to refine the channel estimation.
摘要翻译：在用户设备处的信道估计包括估计至少一个信道的信道质量。基于估计的信道质量来选择第一算法或第二算法。基于选择的算法执行信道估计。第一种算法可以是基于midamble乘法的算法。第二种算法可以是中间码分割算法。信道估计还可以包括估计信道的噪声并且基于所估计的噪声自适应地设置阈值以改善信道估计。可以迭代地执行估计信道质量，第一或第二算法的选择和信道估计，以在信道上提供信号。可以跨迭代修改自适应阈值。信道估计还可以包括确定信道的延迟分布以细化信道估计。

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